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FW: failed pings in nmapwin
From: "Michael Klapheke" <mklapheke () visorygroup com>
Date: Wed, 7 Jan 2004 16:38:55 -0500

Hi.  I apologize for bothering you, but I cannot seem to get NMap to work under Windows XP Pro at all.  I have used it 
successfully in the past, but on this machine it simply won’t work.  I have tried it with the GUI (v 1.3.1) and also 
downloaded the command-line version (v 3.48), but it keeps indicating that hosts are not reachable, even though they 
are on my local subnet and I can ping them using Window’s ping utility.

In other words, I can ping the hosts, but NMap cannot “find” them.  I have disabled all interfaces other than my 
Ethernet Interface (I have a SonicWall VPN Client, a Cisco VPN Client, and a Cisco Wireless Interface as well as a 1394 
interface), but this didn’t change anything, either.  Under the NMapWin “List Interfaces” button I see the following:

Available interfaces:
Name        Raw send  Raw recieve  IP
loopback0   SOCK_RAW  SOCK_RAW
eth0        SOCK_RAW  winpcap

Are there any techniques I can use to troubleshoot this?  The Event Viewer doesn’t show anything abnormal.

Here is the output from ping and command-line nmap:


Pinging with 32 bytes of data:

Reply from bytes=32 time<1ms TTL=128

Reply from bytes=32 time<1ms TTL=128

Reply from bytes=32 time<1ms TTL=128

Reply from bytes=32 time<1ms TTL=128

Ping statistics for

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 0ms, Average = 0ms


C:\Program Files\NMapWinCommandLine\nmap-3.48>nmap -sS -PT -PI -O -T 3

Starting nmap 3.48 ( http://www.insecure.org/nmap ) at 2004-01-07 15:31 Eastern Standard Time

Note: Host seems down. If it is really up, but blocking our ping probes, try -P0

Nmap run completed -- 1 IP address (0 hosts up) scanned in 12.177 seconds

C:\Program Files\NMapWinCommandLine\nmap-3.48>

Any help is greatly appreciated.


Mike Klapheke

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